NEC86_BUFFSIZE
+ (NEC86_BUFFSIZE * WATERMARK_MAX_RATIO - 1))
/ (NEC86_BUFFSIZE * WATERMARK_MAX_RATIO);
if (hw_blocksize + sc->pdma_watermark > NEC86_BUFFSIZE) {
(hw_blocksize + (NEC86_BUFFSIZE - sc->pdma_watermark - 1))
/ (NEC86_BUFFSIZE - sc->pdma_watermark);
(NEC86_BUFFSIZE * WATERMARK_RATIO_IN) / WATERMARK_MAX_RATIO;
if ((wm < NEC86_INTRBLK_UNIT) || (wm > NEC86_BUFFSIZE)